#!/usr/bin/env bash
# Compare deployer balance from Blockscout API vs RPC (e.g. cast balance).
# Use this to verify Blockscout index matches the current running chain/RPC.
#
# Usage: ./scripts/verify/check-deployer-balance-blockscout-vs-rpc.sh [RPC_URL] [EXPLORER_API_URL]
# Default RPC: RPC_URL_138 or https://rpc-core.d-bis.org
# Default Explorer API: https://explorer.d-bis.org/api/v2 (Chain 138 Blockscout)

set -euo pipefail

DEPLOYER="${DEPLOYER_ADDRESS:-0x4A666F96fC8764181194447A7dFdb7d471b301C8}"
RPC="${1:-${RPC_URL_138:-https://rpc-core.d-bis.org}}"
EXPLORER_API="${2:-https://explorer.d-bis.org/api/v2}"

echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
echo "Deployer balance: Blockscout vs RPC (Chain 138)"
echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
echo "Deployer: $DEPLOYER"
echo "RPC:      $RPC"
echo "Blockscout API: $EXPLORER_API"
echo ""

# --- 1. Balance from RPC (source of truth for live chain) ---
RPC_WEI=""
if command -v cast &>/dev/null; then
  RPC_WEI=$(cast balance "$DEPLOYER" --rpc-url "$RPC" 2>/dev/null) || true
fi
if [ -z "$RPC_WEI" ]; then
  RESP=$(curl -sS -X POST "$RPC" \
    -H "Content-Type: application/json" \
    -d "{\"jsonrpc\":\"2.0\",\"method\":\"eth_getBalance\",\"params\":[\"$DEPLOYER\",\"latest\"],\"id\":1}" 2>/dev/null) || true
  RPC_HEX=$(echo "$RESP" | jq -r '.result // empty' 2>/dev/null) || true
  if [ -n "$RPC_HEX" ] && [ "$RPC_HEX" != "null" ]; then
    RPC_WEI=$(printf "%d" "$RPC_HEX" 2>/dev/null) || true
  fi
fi

if [ -z "$RPC_WEI" ]; then
  echo "RPC balance:   (unable to fetch — RPC unreachable or error)"
else
  RPC_ETH=$(awk "BEGIN { printf \"%.6f\", $RPC_WEI / 1e18 }" 2>/dev/null || echo "N/A")
  echo "RPC balance:   $RPC_WEI wei  (~ $RPC_ETH ETH)"
fi

# --- 2. Balance from Blockscout API ---
BLOCKSCOUT_JSON=$(curl -sS "${EXPLORER_API}/addresses/${DEPLOYER}" 2>/dev/null || true)

BLOCKSCOUT_WEI=""
if [ -n "$BLOCKSCOUT_JSON" ]; then
  # Try common Blockscout v2 field names (coin_balance or balance, often string)
  BLOCKSCOUT_WEI=$(echo "$BLOCKSCOUT_JSON" | jq -r '.coin_balance // .balance // .coin_balance_hex // empty' 2>/dev/null) || true
  if [[ "$BLOCKSCOUT_WEI" == 0x* ]]; then
    BLOCKSCOUT_WEI=$(printf "%d" "$BLOCKSCOUT_WEI" 2>/dev/null) || true
  fi
  if [ -z "$BLOCKSCOUT_WEI" ]; then
    BLOCKSCOUT_WEI=$(echo "$BLOCKSCOUT_JSON" | jq -r '.data.coin_balance // .data.balance // empty' 2>/dev/null) || true
  fi
fi

if [ -z "$BLOCKSCOUT_WEI" ]; then
  echo "Blockscout:    (unable to fetch — API unreachable or address not indexed)"
else
  BLOCKSCOUT_ETH=$(awk "BEGIN { printf \"%.6f\", $BLOCKSCOUT_WEI / 1e18 }" 2>/dev/null || echo "N/A")
  echo "Blockscout:    $BLOCKSCOUT_WEI wei  (~ $BLOCKSCOUT_ETH ETH)"
fi

# --- 3. Compare ---
echo ""
if [ -n "$RPC_WEI" ] && [ -n "$BLOCKSCOUT_WEI" ]; then
  if [ "$RPC_WEI" -ge "$BLOCKSCOUT_WEI" ]; then
    DIFF=$((RPC_WEI - BLOCKSCOUT_WEI))
  else
    DIFF=$((BLOCKSCOUT_WEI - RPC_WEI))
  fi
  if [ "$DIFF" -le 1 ]; then
    echo "Match: RPC and Blockscout balances match (diff <= 1 wei)."
  else
    echo "Difference: RPC and Blockscout differ by $DIFF wei. Indexer may be behind or use a different RPC."
  fi
else
  echo "Comparison skipped (one or both sources unavailable). Run from a host that can reach RPC and Blockscout API."
fi

echo ""
echo "Explorer (UI): ${EXPLORER_API%/api/v2}/address/$DEPLOYER"